Rock crusher



y 12, 1932- A. c. DAMAN ET AL 1,365,525

ROCK CRUSHER Filed April 21, 1928 2 Sheets-Sheet l zzz/f/ya #104:

A TTORNE Y.

July 12, 1932. A. c. DAMAN ET AL ROCK CRUSHER 2 Sheets-Sheet Filed April 21, 1928 Patented July 12, 1932 U IT S A E A EN ARTHUR c. DAMAN AND LELAND H. roeun or DENVER, coLonAno, n'ssionorgs r9 nnnvnn EQUIPMENT 00., or DENVER, COLORADO, A coi roaa'rron or coron o;

ROCK cRnsHim H Application filed April 21,

This invention relates to a rock crusher of the reciprocating jaw type and has for its principal object the'provision of a crusher which will have a greater capacity for a given size and power than present 'crushers.

Jaw crushers as at present constructedfare so arrangedthat the cross sectional area between the jaws decreases as the discharge is approached so that choking and over crush- 1 ing results. The capacity of a crusheris, of course, limited by the smallest cross sectional area in the flow channel between the jaws. Todevelop maximum capacity, there should be no restriction of the area in the flowchannel so that the crushed material can'be im mediately voidedto allow the material being crushed to travel as rapidly as its reduction insize'will permit.

Another object of this invention is to so construct the crusher jaws that the cross sectional area of the rock passage will'be practically uniform from the feed to'the discharge extremities. a 1

Still another object of the invention is to L impart a lateral grinding action to the-jaws incombination-with the closing 'or crushing action. I A- further object is to cause one side of the movahlejaw of the crusher to 'move away from the fixed jaw in advance of the other side so that the crushed material will spread and flow toward the sides of the jaw rather than flow, straight through the middle portion, thus presenting a maximum surface to the action of the jaws. j a

A still further objectis to provide a crusher with a movable jaw whichwill have a combination of motions in all lateral directions so that a chewing action as well as a'crushing action is obtained.

Qther objects and advantagesreside in the detail construction of the invention, which is designed for simplicity economy, and efl'iciency. These will become" more apparent from theifollowingdescription.

In the following detailed descriptio ofthe invention reference ishad to the accompanying drawings which form a part hereof; Like 5& numeral refe to like p r i fi views f 1928. Serial No. 271,811 v I the drawings and throughout the deseripa tion. v In the drawings v s Fi i isan'end elevationof the improved crusher looking towardthe fixed jawg'jj I Fig. 2 is a' vertical cross section taken on the line 2+2, Figifli. v

Fig. 3 is a longitudinal vertical cross section taken on the line 33,"Fi g. 1. i

Figs isa plan view of the crusher. The invention comprises a base frameJIO, carrying two inwardly curvedfside frams ll",

ago V which supportan operating shaft 1 2. The

shaft 12, carries the usual fly Wheels 13, and

belt pulleyl i, and is'prOV'ided with tvvo 9 adjacent eccentrics and:16, operativelj connected to swing a -movable awj18,"and"a iixedjaw 19.:

The fixed jaw 19, is carried-on an ecc'entric 20. onan adjusting shaft 21', which can-be rotated through the medium of" a worm 22,

to J

and worm gear23, to cause the fixed-jawto approach the movable jaw so as. to regulate the size of the finished product. "I Fheji-Ipper portion ofthe fixed jaw 19 slidesjon-a 'sup- @521 porting shaft 24:, having a 'squaredportion 25, which rides in an'elongat'ed rectangular bearing opening'26. r i Themo'vablejaw18-is' carried-0n a supporting shaft. 27, having a squared "portion 2 8 18 which passes through a'relatively wide hearing opening-'29 in the jaw. The'jaw lfiis secured to the supporting shatt27,"-.loy means of a pivot pin 30.' By this construction a universal oint isprovidedsothat the movable aw can swing in a horizontal arc about'the Y pin and ma vertical'arc by' rotating the shaft 27 in the-sideirames'l'l. 5

Y The movable jaw is reciprocated byineaiis J r of pitmen 31 and 32, which rideon thee 'en- 923 tries 15 and 16, respectively; The lrotat n of the shaft 12,,i'mpartsfa v'erticalreci'p l tionto the pitmen 31 and 32j The eccentr cs 15 and 16 are placed slightlyv out of ali' gtr ment with each other so that the pitmen W111 be out of step witheach other in-their fmove mer ts; The pitmen operate the i through the medium of togglemenibers act-H ingbetween a cross brace34, and the I I jaw 18. The cross brace 34 is rigidly fixed between the side frames 11.

The toggle members comprise a pair of toggle plates 35 and 37 and a pair of toggle bars 36 and 38. The pitman 32 acts between the rear toggle plate 35 and the front toggle bar 36.? The pitman 33 operates between the rear toggle plate 37 and the front toggle bar 38. The toggle plates 35 and 37 are relativel'y' wide and are arranged with cylindrical bearings at their extremities which ride in depressions in the cross bar 34 and in the pitmen 32 and 33. The toggle bars 36 and 37 are provided with cylindrical bearing extremities as illustrated which ride in semitends from a flat surface at its upper portion to a convex bulge 41 at its lower portion which accommodates the rocking or chewing action, The crushing face of the fixed jaw .19 extends from a flat plane surface at its .upperportion to a concaved depression 42, to receive the bulge 41, at its lower portion. The; lower extremity of the movable jaw is curved forwardly so as to extend partially ,under the fixed jaw 19, as illustrated in Fig. 3.

This actsto retard the material and increase the crushlng surface.

' Assuming the shaft 12 to, be rotating in'an anti-clock-wise direction, in Fig. 3, as indicated by thearrow, the operation of the jaw will be as follows: The eccentric 15 will start the pitman 32 downwardly causing the toggle plate 35 and toggle bar 36 to force the The eccentric 16 will then start the pitman far side of the movablejaw 18 forwardly.

33 downwardly causing the toggle plate 37 ,andthe toggle bar 38 to move the near side of the movable plate forwardly. The far side -,its rearward movement before the near side of the movable jaw will reverse and begin reaches the extent ofits forward movement, thus resulting in a rotative action on the movable ]2LW: as wellas a forward movement thereof. This compounded action serves to ,rollthe rock while it is beingcrushed and fcauses the movable aw to rock in a horizontal plane about the pin 30. It also causes the crushed rock'to'spread over the crushing surfaces.

The-lower sides of both the fixed jaw 19 'and the movable jaw 18 are wider than the upper parts thereof, so as to create a crush 'in'g cavitywhich extends from a practically square opening at the top-to a long narrow .movable jaw. I

curved opening at the bottom. As the rocks become smaller they are spread outwardly toward the sides of the aws so that the lower faces of the jaws have practically the same crushing capacity as the upper faces.

The jaw 18 also has a vertical morement in addition to the above lateral movement which acts to facilitate the chewing action to force the rock downwardly so that it will become wedged between the j aw-s before they start to crush. This is accomplished, as illustrated in Fig. 3, by placing the supporting shaft 27 a substantial distance to the rear of the crushing face of the movable jaw 18, so that, as the lower extremity of the movable jaw is swung rearwardly, its forward face will swing downwardly and as the lower extremity-swings forwardly its crushing face will swing, upwardly.

R-enewable curved cheek plates 43 are provided to. protect the side frames .11.

to allow said jaw to rotate in both a vertical andhorizontal plane; and means for imparting a rocking movement to said movable jaw as it approaches said stationary jaw.

2. Crushing apparatus comprising a stationary jaw; a movable jaw; a hinge for said movable jaw, said hinge being arranged to allow said jaw to rotate in both a vertical and horizontalplane; and means for imparting a rocking movement to saidimovable jaw as it approaches said stationary jaw, said means comprlsing two eccentrics, each eccentric being operatively connected by an 7 independent toggle means adjacent one side of said 3. Crushing apparatus comprising a stationary jaw; a movable jaw; a hinge for said movable jaw, said hingebeing arranged to allow said jaw to rotate in both a vertical and horizontal plane; and'means for imparting a rocking movement to said movable jaw as it approaches said stationary jaw, said means comprising two eccentrics, each eccentric being operatively connected by an independent togglemeans adjacent one side of said movable jaw, said eccentrics being secured on a common shaft. 7

4:. Crushing apparatus comprising a frame; astationary jaw carried in said frame; a movable jaw carried in said frame;

a universal hinge for said movable jaw; and means for impartmg a rockmg movement to a universal hinge eratively vconnected by an independent toggle means adjacentone side of said movable jaw, each of said toggle means comprising a vertically reciprocating pitman; a toggle plate separating one side of said pitman from said frame; and a toggle bar separating the other side of said pitman from said movable jaw.

5. Crushing frame; frame;

apparatus comprising a aistationary jaw carried in said a movable jaw carried 'insaid frame; for said movable jaw; means for imparting a rocking movement to said movable jaw tionary jaw, said means comprising two r0- tatable eccentrics, each eccentric being operatively connected by independent toggle means adjacent one side of said movable jaw; each of said independent toggle means comprising a vertically reciprocating pitman; a toggle plate separating one side of said pitman from said frame; and separating the other side of said pitman from said movable jaw, said toggle bars being arranged for universal movement at both of their extremities.

6. Crushing apparatus comprising a frame; a stationary jaw carried in said frame; a movable jaw carried by said supa stationary a toggle bar inwardly to provide a space which has a-sub-' stantial flare outwardly at the bottom so that said space has curved sides and is substantially wider at the bottom than at the top,

between said flares and conforming along its side edges with the curvature of said side frames, jaw to approach and retreat [from said stationary jaw. j p

In testimony whereof we affix oursignatures. ARTHUR C. DAMAN.

LELAND H. LOGUE.

as it approaches said sta- V jaw, a movable j aw supported and means for causing the movable I porting frame;ya universal hinge forv said movable jaw; means for imparting-a rocking movement to said movable jaw as it approaches said stationary jaw, said hinge comprising a supporting shaft adapted'to support said movable jaw and a pivot securing said movable jaw to said supporting shaft so as to allow the former to swing in the plane of said shaft. 1

7 A rock crusher comprising a supporting frame; inwardly curved side frames extending above said supporting frame; a stationary jawsupported between said side frames;

- a movable jaw supported between said side frames, both said jaws being of greater width at their bottoms than at their tops so as to conform to the curvature of said side frames; means for causing said movable jaw to approach and retreat from said stationary jaw,

and an outwardly curved 1i on said movable jaw adapted to extend party under said sta tionary jaw.

8. In a crusher of thecharacter described.

the combination comprising a movable jaw,

means for pivoting said jaw to permit lateral oscillation thereof, a pair of eccentrics out of phase with each other, and means for connecting said eccentrics to the respective side portions of said jaw to impart lateral oscillatingmovement to said jaw.

.9. A rock crusher comprising in combina-' tion a supporting frame, side frames extend-- ing above said supporting frame and curved 

